Allow fallback from https to http for component update checks.

chrome/browser/component_updater/caps_installer_win.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/component_updater/caps_installer_win.h"
 
 #include <stdint.h>
 #include <string>
 #include <utility>
+#include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
 #include "base/threading/worker_pool.h"
@@ skipping 51 matching lines @@
 
   bool VerifyInstallation(const base::DictionaryValue& manifest,
                           const base::FilePath& dir) const override {
     bool has_binary = base::PathExists(dir.Append(kCapsBinary));
     ReportUmaStep(has_binary ? CAPS_COMPONENT_READY : CAPS_COMPONENT_MISSING);
     return has_binary;
   }
 
   bool CanAutoUpdate() const override { return true; }
 
+  bool RequiresNetworkEncryption() const override { return false; }
+
   bool OnCustomInstall(const base::DictionaryValue& manifest,
                        const base::FilePath& install_dir) override {
     return true;
   }
 
   void ComponentReady(const base::Version& version,
                       const base::FilePath& install_dir,
                       scoped_ptr<base::DictionaryValue> manifest) override {
     // Can't block here. This is usually the browser UI thread.
     base::WorkerPool::PostTask(
@@ skipping 23 matching lines @@
 void RegisterCAPSComponent(ComponentUpdateService* cus) {
   // The component updater takes ownership of |installer|.
   scoped_ptr<ComponentInstallerTraits> traits(
       new CAPSInstallerTraits());
   DefaultComponentInstaller* installer =
       new DefaultComponentInstaller(std::move(traits));
   installer->Register(cus, base::Closure());
 }
 
 }  // namespace component_updater